Soluble fms-like tyrosine kinase 1 (sFlt-1) and placental growth factor (PlGF) are not only observed in serum and plasma in preeclampsia. Both are biomarkers of angiogenesis and cardiovascular risk in the metabolic syndrome.
"Placental growth factor is a vascular endothelial growth factor involved in angiogenesis, vascular inflammation and plaque formation. Soluble Fms-like tyrosine kinase 1 is a decoy receptor for placental growth factor, reducing its activity. " (Theilade S, and col. in Diabet Med. 2012 Mar;29(3):337-44)
Article Angiogenesis and biomarkers of cardiovascular risk in adults...